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Abstract

Described is a data collator that needs to read a random data table of unlimited length only once, in order to rearrange the data table into a preprogrammed order.

Country

United States

Language

English (United States)

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Hardware Data Collator

Described is a data collator that needs to read a random data table of
unlimited length only once, in order to rearrange the data table into a
preprogrammed order.

Fig. 1 illustrates in block form the data collector to be described while Fig. 2
illustrates the logic required.

By utilizing the described apparatus and the described logic a table
consisting of, for example, a hundred randomly arranged words can be put into
an orderly arrangement. The operation of the described hardware is as follows.

The sort address counters 20, 21, 22 are presetable tri-state counters, and
are preset so that the tester will keep track of the numbers of each sort which are
in the corresponding sort registers coupled to each succeeding address counter.
The final sort register counter 22 is preset by adding all the previous sort
registers to the sort address counter. This presetting must be in a sequential
order starting with the first counter and ending with the final counter. Thus each
sort counter is preset to a predetermined number. By utilizing tri-state counters
the outputs can be OR dotted using the gating control for addressing memory.

The operation of the data collector of Fig. 1 is best illustrated by referring
simultaneously to the logic flow chart shown in Fig. 2. Initially the status address
counter 23 is set to 000 and the interrogate register 24 is loaded with the data, to
be collated, of address 000 from memory 26. This address number 000 is
simultaneously loaded into the status address register 25. This data now in
register 24 is fed into a decoder 16 and from there into one of the sort address
counters 20, 21, N, where the addresses are compared by comparator 29 with
the numbers s...